| Autor: |
Sansò, Fernando, Tregoning, Paul, Rizos, Chris, Bosch, Wolfgang, Savcenko, Roman |
| Zdroj: |
Dynamic Planet (978-3-540-49349-5); 2007, p51-56, 6p |
| Abstrakt: |
Multi-mission satellite altimetry provides a unique opportunity to perform an innovative, utmost rigorous cross-calibration of all satellites operating simultaneously. Data from TOPEX/Poseidon, ERS-2, GFO, and Jasonl is used to compute — in all combinations — nearly simultaneous single and dual satellite crossovers that are unaffected by sea level variability. The total set of crossovers provides a rather dense sampling of the orbits of all satellites and realizes a rigid network with high redundancy to obtain — by a discrete crossover analysis technique — a reliable estimate of the radial error components. The analysis is performed for a sequence of 10 day periods (the cycle 96-457 of TOPEX) with 3 days overlap to neighbouring periods. For all satellites the error estimates for the radial component exhibit significant geographical pattern — even for TOPEX. The error components are also taken to calculate time series of relative range biases and geocentre offsets between all altimeter missions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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